What does this do? I assume it increases or decreases timing with the A/C on. Has anyone turned this off with the A/C bump torque spark idle off as well? What effect did it have if you still have A/C in your car. I zeroed my retard vs % torque reduction table under torque managment and my idle hunts while the A/C is on, so I assume this A/C bump torque spark referenced that table. I would like to keep my retard vs % torque reduction table zerod if possible.